Improvement in steam-pumps



2 Sheets-Sheet. 1. A. FRIEDMANN 7 Steam Pump, N0..106,683 Patented Aug. 23, 1870.

NIPElnna, PHQYKLLI HOGRAPHER. WASHINGTON, D C.

2 Sh eets sheet. 2. A. PRIBDMANN Ste-am Pump. No. 106,683. Patented Aug. 23, 1870."

Winesses NJETERS, FHOTO-LITHOGRAPHER. WASHINGTON. DV 0.

wait-mi tates ALEXANDER FBIEDMANN, OF VIENNA, AUSTRIA.

Letters Patent A 106,683, dated August 23, 1870.

IMPROVEMENT IN STEAM-PUMPS.

The Schedule referred to in these Letters Patent and making part of the same.

patented in the United States by Letters Patent dated 6 Aprii, 1869, in which injector-prim p I provide, in proportion to the diameter of the steam-nozzle, one

or more intermediate pipes,.so that thei'orced liquid atthe circumference, notwithstanding its great total bulk, will be always mixed in very thin stratas with the driving steam-jet, which will be always in the center, whereby the steam is only gradually condensed and the shock is very much reduced.

Now, my process for cleaning the suction filters consists in forcing the steam (entering the suction pipe of a pump tor the purpose of raising the bilgewatcr or other liquids) by means of a valve orthrottle-valve or cock, placed in the suction-pipe or delivcry-pipe of the pump, and above the mouth of the steam-pipe, and to pass down through the suction filter, blowing out the holes and cleaning it from all obstructions.

To enable others skilled in the art to make and use my invention, I will now proceed to describe the construction and operation of my contrivance, reference being had to the annexed drawing making a part of this specification, in, Wlllcll- Figure 1, Plan I, shows the longitudinal section of one of my smallest pumps, patented in the United States by Letters Patent dated 6 April, 1862), and now provided with a throttle-valve for cleaning the filter.

a is the steam-outlet.

b b b are the intermediate pipes.

c is the suction filter. :5 T

d is the delivery-pipe. i

s is the intercalated throttle-valve.

l is the lever to shut this valve, when required.

Figure 2, Plan II, is the longitudinal section of one of my large patented pumps, provided with suc tion filttr and the throttle-valve for cleaning the same.

a is the steam-outlet.

I) I) b b are the intermediate pipes.

c is the suction filter.

d is the delivery-pipe.

s is the intercalatcd throttle-valve.

l, the lever.

Figure 4, Plan II, is the transversal section of a steamer, provided with one of my patented pumps, supplied with throttle-valve for cleaning the filter.

M is my patented pump. "2

A is the steam-pipe.

O is the filter.

1) is the delivery pipe.

S is the t-ln'ottlevalve.

L is the lever.

Figure 3, Plan II, is the longitudinal section of an ordinary pump, provided with apparatus for cleaning the filter.

P is the body of the pump.

a is the suction-valve.

b, the delivery val I,

c is the suction filter.

(Z'is the suction-pipe.

e, the delivery-pipe.

s is the throttle-valve, intercalated either in the suction-pipe or in the delivery-pipe.

l is the lever.

v is the steam-pipe, entering the suction-pipe below the suction-valve.

r is the steam'cock or valve, to be opened or shut as required. a

To clean the filter of my patented pump, fig. 4, Plan II, the pump being at work, the tln'ottle-valve s is shut for some seconds; then, the steam blowing out of the steam-nozzle or, cannot take its former direction, but must returuthrongh the water-passages of the intermediate pipes, enter the suction filter c, and blow out of its holes, thus cleaning it perfectly from any matter stepping up.

On opening again the throttle-valve, the steam takes its ordinary way forward, and the pump works as before.

To clean the filter of an ordinary pump, fig. 3, Plan II, shut the throttle-valve s and open the steam-cock or valve r; then the steam will blow through the filter and clean it. Shutting again the cock or valve 1', and opening the throttle s, the pump will work as betbre.

W'hat I claim as new, and desire to secure by Letters Patent, is-

1. The combination and .arrangement of a valve or throttle-valve, s, in thedelivery-pipe of a pump, to be kept open whenever the liquid is discharged, but to be shut from the outside when required, for the purpose of cleaning the suction filter of the injector patented by me in the United States by Letters Patent of April 6, 1869. i E

2. A valve or throttle-valve or cook, s, in the delivery-pipe or suction of the apparatus, and of a steam-pipe, 17, provided with a valve or cock, '1', entering the suction-pipe below the suction-valve, for cleaning the suction filter of any apparatus for raising. or forcing fluids, substantially as described.

ALEX. FRIEDMANN.

\Vitnesses:

G. BROSBECK, E. K'ciarnve. 

